We need to specify( 2) 75 gallon hot water heaters, what do you recommend? Both will be gas fired. The first will be mounted in the attic/eaves area, with a maximum height of 5 feet in the room. It willfeed the upstairs laundry and the master bath, which includes a 80 gallon whirlpool tub, shower and 2lavs.The distance to the furthest fixture is 20 ft.The second will be mounted in the basement, and will feedthe rest of the house, including kitchen, 2 upstairs baths (tub/shower combo), powder room guest bathand basement bath(should be used infrequently). The height of the mech room is 8 ft, so height is not anissue. The furthest fixtures will be 70 ft away, so a recirculating system may be required.